X11 (AKA the X Window System) is what pretty much every UNIX-like system other than Mac OS X relies upon for its GUI. There are different implementations of it. Most GNU/Linux systems run xorg. You can read about X11 on their site.

I tried using >console and then it asks for username and password, but the ones I gave were deemed incorrect. Is it the same as Mac OS X (the username/password, that is)? I tried a bunch of things but nothing worked. Anyway to just find out what I need to type there (assuming I'm logged in to Mac OS X)?

I figured that but I'm still not getting it to work. I know my password (I use it to login to Mac OS X). The thing I'm wondering, is how does UNIX want it?

My username on Mac OS X is Nicholas Gravelyn. How should I type this into the console? I tried with the space but the last 'n' doesn't fit. Any ideas? I've tried nicholas, Nicholas, NicholasGravelyn, Nicholas Gravely (when I hit 'n' again, it just goes to the password entry). I must be the most computer-illiterate programmer ever .